The present invention relates to ink compositions, more particularly to an ink composition especially suitable for a marking pen.

Presently, inks prepared by dissolving an oil-soluble dye and resin in xylene are mainly employed for marking pens which are extensively used at home, school, office, etc. as writing and drawing implements. However, xylene has the objections of: (1) giving off a vapor having a strong odor to intensely stimulate the eyes, nose and throat, (2) causing troubles in the marrow when inhaled over a prolonged period of time even in a very small amount, and (3) producing dermatitis when xylene contacts the skin repeatedly. For this reason, it has been desired to provide an ink for marking pens (hereinafter referred to briefly as "ink" unless otherwise specified) prepared by using a solvent of weak odor and low toxicity. In fact, inks have recently become available which are prepared by dissolving an oil- or alcohol-soluble dye and resin in methyl cellosolve of a low odor. Although methyl cellosolve is weak in odor, it is as toxic as xylene and involves the hazard that the vapor of the ink will be inhaled by the user or the ink will contact his skin. Thus the ink proposed has not overcome the objections heretofore experienced. Furthermore, when a drawing or writing is made on paper or the like with the conventional ink, the dye continues to sublime from the ink-deposited portion even after the ink has been dried, with the result that the color transfers to paper, cloth or the like which comes into contact with the inked portion, which is turn undergoes fading.

It is known that an alicyclic hydrocarbon solvent is weak in odor and much lower than xylene or cellosolve in toxicity to the human body, but the use of this solvent is infeasible inasmuch as at present there is no dye available that is soluble therein to a concentration required for the ink.

Accordingly, a main object of this invention is to provide a dye which is readily soluble in a substantially odorless and nontoxic alicyclic hydrocarbon solvent to a high concentration.

Another object of this invention is to provide a dye which will not sublime from the ink-deposited portion after it has been dried.

Another object of this invention is to provide an ink which is low in odor and toxicity such that it will not adversely affect the human body even when used over a long period of time.

Still another object of this invention is to provide an ink having a high concentration of dye and excellent in tinctorial properties.

Other objects and features of this invention will become more apparent from the following description.

The present invention provides an ink composition which comprises an alicyclic hydrocarbon solvent having dissolved therein a resinous binder and a modified dye, said modified dye being at least one species selected from the group consisting of a reaction product obtained by reacting a dye having at least one group of --CO.sub.2 M and --SO.sub.3 M in the molecule wherein M is an alkali metal with an organic ammonium compound and a reaction product obtained by reacting a basic dye with an acid compound: said ammonium compound being represented by the formula ##SPC1## ##EQU1## or ##EQU2## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are respectively a saturated or unsaturated hydrocarbon radical having 1 to 40 carbon atoms, a radical of a saturated or unsaturated hydrocarbon bonded to a saturated or unsaturated hydrocarbon by a divalent group of --O--, --S--, --COO--, --CONH-- or --NH--, the total carbon number of both hydrocarbons bonded being in the range of 2 to 40, or ##EQU3## R' being an alkyl or alkenyl having 1 to 20 carbon atoms, provided that at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 has a carbon number of not lower than 4 and the total carbon number of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 is in the range of 7 to 55; R.sub.5 is a saturated or unsaturated hydrocarbon radical having 4 to 40 carbon atoms, a radical of a saturated or unsaturated hydrocarbon bonded to a saturated or unsaturated hydrocarbon by a divalent group of --O--, --S--, --COO--, --CONH-- or --NH--, the total carbon number of both hydrocarbons bonded being in the range of 4 to 40, or ##EQU4## R' being an alkyl or alkenyl having 4 to 20 carbon atoms; R.sub.6 is hydrogen atom, methyl or ethyl group; R.sub.7 is an aliphatic hydrocarbon radical having 4 to 22 carbon atoms; R.sub.8 and R.sub.9 are respectively a hydrocarbon radical having 1 to 10 carbon atoms; R.sub.10 is methyl, ethyl, butyl or propyl; R.sub.11, R.sub.12 and R.sub.13 are respectively a hydrogen atom, a hydrocarbon radical having 1 to 40 carbon atoms, a radical of a hydrocarbon bonded to a hydrocarbon by a divalent group of --O--, --S--, --COO--, --CONH-- or --NH--, the total carbon number of both hydrocarbons bonded being in the range of 2 to 40, or ##EQU5## R' being an alkyl or alkenyl having 1 to 20 carbon atoms, provided that at least one of R.sub.11, R.sub.12 and R.sub.13 is a radical having a carbon number of not lower than 4 and the total carbon number of R.sub.11, R.sub.12 and R.sub.13 is in the range of 4 to 50; X is halogen atom and; A is an acid residue; and said acid compound being represented by the formula

R.sub.14 Y                                                 (VI), ##EQU6## wherein R.sub.14 and R.sub.19 are respectively a saturated or unsaturated aliphatic hydrocarbon radical having 7 to 22 carbon atoms, an aromatic hydrocarbon radical having 10 to 28 carbon atoms or a saturated or unsaturaated alicyclic hydrocarbon radical having 10 to 28 carbon atoms; R.sub.15 is a saturated aliphatic hydrocarbon radical having 2 to 14 carbon atoms; R.sub.16, R.sub.17, R.sub.20 and R.sub.21 are respectively a saturated or unsaturated aliphatic hydrocarbon radical having 4 to 22 carbon atoms; R.sub.18 is a saturated aliphatic hydrocarbon radical having 4 to 18 carbon atoms; M is an alkali metal or ammonium; Y is a --CO.sub.2 M--, --SO.sub.3 M--, or --OSO.sub.3 M-- group wherein M is the same as above.

According to the researches of the present inventor it has been found that a modified dye obtained in accordance with the present invention is soluble in an alicyclic hydrocarbon solvent to a very high concentration, making it possible to obtain an ink of deep color without using xylene, cellosolve or like solvent which is detrimental to the human body. The reason why the reaction product described above is highly soluble in an alicyclic hydrocarbon solvent has not been fully clarified yet.

Further this invention assures greatly reduced sublimation of dye from the inked portion after the ink has been dried, consequently eliminating the transfer of color to paper, cloth or the like which will contact the inked portion and permitting hardly any fading of color in the inked portion over a long period of time.

The dyes to be used according to this invention having at least one of --CO.sub.2 M groups and --SO.sub.3 M groups wherein M is as defined above include various dyes such as monoazo dyes, disazo dyes, trisazo dyes, polyazo dyes, anthraquinone dyes, triphenylmethane dyes, xanthen dyes, stilbene dyes and indigo dyes. These dyes are used singly or in combination with one another.

Examples of dyes having at least one of --CO.sub.2 M and --SO.sub.3 M groups are shown below, all of which are indicated in accordance with Color Index (2nd ed.) compiled and published jointly by The American Association of Textile Chemist and Colorists and The Society of Dyers and Colourists of Great Britain:

1. Monoazo dyes:

Direct Yellow 8, 27, 28,

Acid Yellow 11, 17, 23, 25, 29, 36, 40, 76, 98, 99,

Direct Red 20,

Acid Red 1, 6, 8, 9, 13, 14, 18, 26, 27, 32, 35, 37, 42, 133, 155, 180, 183, 184, 186, 198, 249, 265,

Acid Blue 92, 117, 158, 161,

Direct Orange 39, 41,

Acid Orange 1, 7, 8, 10, 19, 20, 28, 41, 78,

Acid Violet 7, 11,

Acid Green 12, 35,

Acid Brown 2, 4, 20,

Acid Black 51, 52, 107.

2. Disazo dyes:

Direct Yellow 1, 12, 24, 33, 44,

Acid Yellow 38, 42, 44,

Direct Red 1, 2, 4, 13, 17, 23, 24, 28, 31, 33, 37, 39, 44, 46, 62, 63, 75, 79, 81, 83, 229,

Acid Red 85, 89, 97, 111, 114, 115, 134, 145, 154, 158, No. 26670,

Direct Blue 1, 2, 6, 15, 22, 25, 76, 90, 98, 158, 165, 168, 226,

Acid Blue 29, 113, 120, 123,

Direct Black 17, 51,

Acid Orange 24, 33, 45, 51, 56,

Direct Violet 1, 7, 9, 12, 22, 35, 48, 51, 63,

Acid Green 19, 20,

Acid Brown 14,

Direct Orange 1, 6, 8, 10, 26, 29, 49, 102,

Direct Brown 2, 58, 59,

Acid Black 1, 7, 24, 26, No. 20510.

3. Trisazo dyes:

Direct Blue 71, 78, 120, 163,

Direct Green 1, 6, 8, 33, 59,

Direct Brown 1A, 6, 27, 95, 101, 173,

Acid Black 94.

4. Polyazo dyes:

Direct Yellow 60,

Direct Red 32, 80, 84, 194,

Direct Blue 131, 150, 159, 162, 175, 176,

Direct Brown 13, 14, 31, 33, 39, 43, 44, 63, 70, 73, 74, 100, 127, 149, 150, 215,

Acid Brown 25, 92, 106, 119, 120, 123,

Direct Black 19, 22, 28, 32, 34, 75, 76, 77, 97, 100, 112.

5. Anthraquinone dyes:

Acid Red 80, 82, 83,

Acid Blue 23, 25, 27, 40, 41, 43, 45, 67, 78, 80, 138,

Acid Violet 34, 41, 43, 51, No. 62000,

Acid Green 25, 27, 36, 41, 44,

Acid Brown 27,

Acid Black 48.

6. Triphenylmethane dyes:

Acid Blue 1, 7, 9, 15, 22, 83, 90, 93, 100, 103, 104,

Direct Blue 41,

Acid Violet 15, 49,

Acid Green 3, 9, 16.

7. Xanthene dyes:

Acid Yellow 73, 74,

Acid Red 51, 52, 87, 91, 92, 93, 94, 95, 98,

Acid Blue 19,

Acid Violet 9.

8. Stilbene dyes:

Direct Yellow 11, 39.

9. Indigo dyes:

Acid Blue 74.

Among these dyes, preferable are those having one to two --CO.sub.2 M groups, one to two --SO.sub.3 M groups or both --CO.sub.2 M group and --SO.sub.3 M group wherein M is sodium.

The organic ammonium compounds to be reacted with the dyes having at least one group of --CO.sub.2 M and --SO.sub.3 M according to this invention are represented by the formulas (I), (II), (III), (IV) and (V) and used singly or in combination with one another. Typical of the organic ammonium compounds to be used in this invention are shown in Tables 1 - 5 below:

I. Examples of quaternary ammonium halides represented by the formula (I) are shown in Table 1:

              Table 1______________________________________Compound No.      Name of organic ammonium compound______________________________________ (1)      Butyl triethyl ammonium halide (2)      Hexyl triethyl ammonium halide (3)      Octyl tributyl ammonium halide (4)      Decyl tripropyl ammonium halide (5)      Dodecyl triethyl ammonium halide (6)      Tetradecyl trimethyl ammonium halide (7)      Hexadecyl trimethyl ammonium halide (8)      Octadecyl trimethyl ammonium halide (9)      Docosyl trimethyl ammonium halide(10)      Hexacosyl trimethyl ammonium halide(11)      Triacontyl trimethyl ammonium halide(12)      Hexacontyl trimethyl ammonium halide(13)      Octadecenyl triethyl ammonium halide(14)      Didodecyl diethyl ammonium halide(15)      Ditetradecyl diethyl ammonium halide(16)      Dihexadecyl dimethyl ammonium halide(17)      Octadecyl octadecenyl dimethyl     ammonium halide(18)      Hexadecyl octadecyl dimethyl ammonium     halide(19)      Trioctyl ethyl ammonium halide(20)      Tridecyl methyl ammonium halide(21)      Didodecyl hexadecyl methyl ammonium     halide(22)      Dioctadecyl octyl methyl ammonium halide(23)      Dodecylamidomethyl triethyl ammonium halide(24)      Hexadecylamidopropyl trimethyl ammonium     halide(25)      Tetradecylaminomethyl trimethyl ammonium     halide(26)      Hexacosylaminomethyl dimethyl ammonium     halide(27)      Lauroylethyl octyl dimethyl ammonium halide(28)      Stearoylmethyl octyl dimethyl ammonium     halide(29)      Oleyloxibutyl trimethyl ammonium halide(30)      Octylthioethyl trimethyl ammonium halide(31)      Didodecylphosphoryl trimethyl ammonium     halide(32)      dioleylphosphoryl triethyl ammonium halide(33)      Oxistearyl trimethyl ammonium halide(34)      Dodecylchlorobenzyl trimethyl ammonium     halide(35)      Hexadecyl aminopropyl dimethyl ammonium     halide(36)      Octylbenzyl trimethyl ammonium halide(37)      Dodecylbenzyl trimethyl ammonium halide(38)      Hexadecylbenzyl trimethyl ammonium halide(39)      Butylcyclohexyl trimethyl ammonium halide(40)      Octylcyclohexyl trimethyl ammonium halide(41)      Octylnaphtyl trimethyl ammonium halide(42)      Didecylbenzyl dimethyl ammonium halide(43)      Decyl octylbenzyl dimethyl ammonium halide(44)      Dodecyl hexyl cyclohexyl ammonium halide______________________________________

II. Examples of pyridinium halides represented by the formula (II) are shown in Table 2 below:

              Table 2______________________________________Compound No.      Name of organic ammonium compound______________________________________(45)      N-butyl pyridinium halide(46)      N-octyl pyridinium halide(47)      N-decyl pyridinium halide(48)      N-dodecyl pyridinium halide(49)      N-dodecyl methyl pyridinium halide(50)      N-tetradecyl pyridinium halide(51)      N-hexadecyl pyridinium halide(52)      N-octadecyl pyridinium halide(53)      N-docosyl pyridinium halide(54)      N-hexacosyl pyridinium halide(55)      N-triacosyl pyridinium halide(56)      N-hexacontyl pyridinium halide(57)      N-octadecylamidomethyl pyridinium halide(58)      N-hexadecylamidopropyl pyridinium halide(59)      N-tetradecylaminomethyl pyridinium     halide(60)      N-tetradecylaminomethyl ethyl pyridinium     halide(61)      N-methyl-N-octadecenylaminomethyl     pyridinium halide(62)      N-Lauroylethyl pyridinium halide(63)      N-stearoylmethyl pyridinium halide(64)      N-octadecenyloxibutyl pyridinium halide(65)      N-hexadecenylthioethyl pyridinium halide(66)      N-didodecyloxiphosphoryl pyridinium halide(67)      N-decylbenzyl pyridinium halide(68)      N-octadecylbenzyl pyridinium halide(69)      N-hexadecyclcyclohexyl pyridinium halide(70)      N-dodecylcyclohexyl pyridinium halide______________________________________

III. Examples of quinolinium compounds represented by the formula (III) are shown in Table 3 below:

              Table 3______________________________________Compound No.      Name of organic ammonium compound______________________________________(71)      N-octyl quinolinium chloride(72)      N-heptadecyl quinolinium chloride______________________________________

IV. Examples of imidazolinium compounds represented by the formula (IV) are shown in Table 4 below:

              Table 4______________________________________Compound No.      Name of organic ammonium compound______________________________________(73)      1-Ethyl-1-hydroxyethyl-2-heptadecyl-     imidazolinium diethylsulphate(74)      1-Methyl-1-hydroxymethyl-2-tridecyl-     imidazolinium chloride______________________________________

V. Examples of organic and inorganic acid salts of primary, secondary and tertiary amines represented by the formula (V) are acid salts such as hydrochlorides, formates, acetates, lactates etc., which are shown in Table 5 below:

              Table 5______________________________________Compound No.      Name of organic ammonium compound______________________________________(75)      Butyl amine hydrochloride(76)      Hexyl amine hydrochloride(77)      Octyl amine hydrochloride(78)      Decyl amine hydrochloride(79)      dodecyl amine hydrochloride(80)      Octadecyl amine hydrochloride(81)      docosyl amine hydrochloride(82)      Triacontyl amine hydrochloride(83)      Octylbenzyl amine hydrochloride(84)      Hexylbenzyl amine hydrochloride(85)      Hexadecylamidopropyl amine hydrochloride(86)      Tetradecylaminomethyl amine hydrochloride(87)      Octadecenyloxibutyl amine hydrochloride(88)      Hexadecylthioethyl amine hydrochloride(89)      Didecylphosphoryl amine hydrochloride(90)      Tetradecyl amine sulphate(91)      Decylcyclohexyl amine sulphate(92)      Hexacontyl amine nitrate(93)      Dodecylcyclohexenyl amine nitrate(94)      Octadecenyl amine phosphate(95)      Hexadecyl amine acetate(96)      Octadecenylamidomethyl amine acetate(97)      Hexacosyl amine lactate(98)      Lauroylethyl amine lactate(99)      Dibutyl amine acetate(100)     Hexadecyl ethyl amine hydrochloride(101)     Hexyl methyl amine hydrochloride(102)     Hexadecyl methyl amine hydrochloride(103)     Didecyl amine hydrochloride(104)     Dihexylbenzyl amine hydrochloride(105)     Dibutylcyclohexyl amine hydrochloride(106)     Dioctadecyl amine formate(107)     Octyl butyl amine acetate(108)     Dodecyl propyl amine acetate(109)     Butyl diethyl amine hydrochloride(110)     Octyl propyl ethyl amine hydrochloride(111)     Octadecyl dimethyl amine hydrochloride(112)     Tridecyl amine hydrochloride(113)     Dodecyl ethyl methyl amine acetate(114)     Octyl propyl ethyl amine acetate______________________________________

Among these typical organic ammonium compounds, particularly advantageous are: (a) quaternary ammonium ammonium chlorides represented by the formula (I) above, (b) pyridinium chlorides represented by the formula (II) above, (c) quinolinium chlorides represented by the formula (III) above, (d) imidazolinium chlorides represented by the formula (IV) above and (e) primary, secondary and tertiary amine hydrochlorides represented by the formula (V) above.

The basic dyes to be used according to this invention have a positively charged nitrogen, sulphur or oxygen atom in the molecule and include various dyes such as azo dyes, diphenylmethane dyes, triarylmethane dyes, xanthene dyes, acridine dyes, methine or polymethine dyes, thiazole dyes, azine dyes, oxazine dyes and thiazine dyes. These dyes can be used singly or in combination with one another.

Examples of the basic dyes are shown below in accordance with Color Index.

1. Azo dyes:

Basic Yellow 32, 34, 36,

Basic Orange 1, 2, 32, 33, 34,

Basic Red 17, 18, 23, 24, 32, 34, 38, 39, 40,

Basic Violet 26, 28,

Basic Blue 58, 59, 64, 65, 66, 67, 68, 91, 98,

Basic Brown 1, 2, 4, 11, 12,

Basic Black 2, 8.

2. Diphenylmethane dyes:

Basic Yellow 2, 3.

3. Triarylmethane dyes:

Basic Red 9,

Basic Violet 1, 2, 3, 4, 13, 14,

Basic Blue 1, 5, 7, 11, 19, 26,

Basic Green 1, 4.

4. Xanthene dyes:

Basic Red 1,

Basic Violet 10, 14.

5. Acridine dyes:

Basic Yellow 9,

Basic Orange 10, 14, 15.

6. Methine or polymethine dyes:

Basic Yellow 11, 14, 21, 28, 33, 35,

Basic Orange 21, 22,

Basic Violet 7, 15, 21, 27,

Basic Red 13, 14, 15, 27, 35, 36, 37.

7. Thiazole dyes:

Basic Yellow 1.

8. Azine dyes:

Basic Red 2,

Basic Violet 5,

9. Oxazine dyes:

Basic Blue 3, 6, 12.

10. Thiazine dyes:

Basic Blue 9, 24, 25,

Basic Green 5.

11. Triphenylmethane dyes:

Basic Green 4.

12. Quinoline dyes:

Basic Green 6.

13. Anthraquinone dyes:

Basic Violet 21, 22, 25,

Basic Blue 44, 45, 47, 60.

The acid compounds to be reacted with the basic dyes according to this invention are represented by the formulas (VI), (VII), (VIII), (IX) and (X) and can be used singly or in combination with one another. Typical of these acid compounds to be used in this invention are shown in Tables 6 - 10.

(I) Examples of alkali metal salts and ammonium salts represented by the formula (VI) are shown in Table 6:

              Table 6______________________________________Compound No.      Name of acid compound______________________________________(115)     Sodium caprylate(116)     Potassium laurate(117)     Ammonium myristate(118)     Potassium myristate(119)     Ammonium palmitate(120)     Potassium palmitate(121)     Sodium palmitate(122)     Ammonium stearate(123)     Potassium stearate(124)     Sodium stearate(125)     Sodium behenate(126)     Ammonium oleate(127)     Potassium oleate(128)     Sodium oleate(129)     Sodium butylbenzenesulfonate(130)     Sodium hexylbenzenesulfonate(131)     Sodium octylbenzenesulfonate(132)     Sodium decylbenzenesulfonate(133)     Sodium dodecylbenzenesulfonate(134)     Sodium hexadecylbenzenesulfonate(135)     Sodium butylnaphthalenesulfonate(136)     Potassium hexylnaphtalenesulfonate(137)     Sodium rhodinate(138)     Ammonium rhodinate(139)     Sodium naphthenate(140)     Ammonium naphthenate(141)     Potassium naphthenate(142)     Sodium laurylsulfate(143)     Potassium laurylsulfate(144)     Sodium cetylsulfate(145)     Potassium cetylsulfate(146)     Sodium oleylsulfate(147)     Potassium oleylsulfate______________________________________

II. Examples of alkali metal salts and ammonium salts represented by the formula (VII) are shown in Table 7.

              Table 7______________________________________Compound No.      Name of acid compound______________________________________(148)     Dibutyl sodium sulfoadipate(149)     Dibutyl ammonium sulfoadipate(150)     Dioctyl sodium sulfoadipate(151)     Didodecyl sodium sulfoadipate(152)     Dihexyl potassium sulfosuccinate(153)     Didodecyl sodium sulfosuccinate(154)     Dioctadecyl sodium sulfosuccinate______________________________________

III. Examples of alkali metal salts and ammonium salts represented by the formula (VIII) are shown in Table 8.

              Table 8______________________________________Compound No.      Name of acid compound______________________________________(155)     Sodium adipate(156)     Sodium suberate(157)     Potassium sebacate(158)     Sodium sebacate(159)     Ammonium sebacate(160)     Sodium azelate______________________________________

IV. Examples of alkali metal salts and ammonium salts represented by the formula (IX) are shown in Table 9.

              Table 9______________________________________Compound No.      Name of acid compound______________________________________(161)     Monooctyl potassium phosphate(162)     Monododecyl sodium phosphate(163)     Monohexadecyl potassium phosphate(164)     Monobehenyl sodium phosphate______________________________________

V. Examples of alkali metal salts and ammonium salts represented by the formula (X) are shown in Table 10.

              Table 10______________________________________Compound No.      Name of acid compound______________________________________(165)     Dibutyl sodium phosphate(166)     Dibutyl ammonium phosphate(167)     Dioctyl sodium phosphate(168)     Didoecyl potassium phosphate(169)     Dihexadecyl sodium phosphate______________________________________

Among these acid compounds exemplified above, particularly preferable are sodium salts of the compounds represented by the formulas (VI), (VII), (VIII), (IX) and (X).

The modified dye of the present invention can be prepared by the reaction of a dye having at least one of CO.sub.2 M groups and SO.sub.3 M groups with an organic ammonium compound represented by the formula (I), (II), (III), (IV) or (V) and by the reaction of a basic dye having a positively charged nitrogen, sulphur or oxygen atom in the molecule with an acid compound represented by the formula (VI), (VII), (VIII), (IX) or (X). The reaction can be conducted in water or organic solvent with stirring at a temperature from about 20 about 40 with water to separate the modified dye, followed by drying. The organic ammonium compound represented by the formula (I), (II), (III), (IV) or (V), or the acid compound represented by the formula (VI), (VII), (VIII), (IX) or (X) is used in an amount of at least one mole per mole of the dye. When the dye contains two or more substituents represented by --CO.sub.2 M and/or SO.sub.3 M, the compound can be employed in such an amount that at least one of the above substituents contained in the dye molecule is reacted with the compound. Examples of the organic solvents used in the reaction to prepare the modified dye are alcohols, ketones, ethers, esters, aromatic solvents, aliphatic hydrocarbons, alcyclic hydrocarbons, etc., among which preferable are alcohols, ketones and ethers. The above reaction of dye with compound can be conducted prior to or simaltaneously with the preparation of the present ink composition. In the latter case it is preferable to first dissolve a resinous binder in an alicyclic hydrocarbon serving as a solvent for the ink composition and thereafter to add the dye and compound thereto for the reaction conducted in the same manner as above.

The resultant modified dye has a structure in which at least one of --CO.sub.2 M and/or SO.sub.3 M, or a positively charged nitrogen, sulphur or oxygen atom contained in the molecule is reacted with one mole of the organic ammonium compound or the acid compound, is insoluble in water but soluble in alicyclic and aliphatic hydrocarbons, and has the same color as the original dye.

The alicyclic hydrocarbon solvents to be used in this invention which may differ with the type of the dye used, the desired concentration of ink, etc. are preferably those boiling at about 75 from the viewpoint of preservability of ink over a prolonged period of time and drying speed after drawing or writing. Such solvents can be used alone or in admixture with one another and typical examples thereof are:

I. hydrocarbons of cyclohexane series: cyclohexane, methylcyclohexane, ethylcyclohexane, dimethylcyclohexane, methylethylcyclohexane, butylcyclohexane, ethylbutylcyclohexane, isopropylcyclohexane, etc.

Ii. hydrocarbons of cyclohexene series: ethylcyclohexene, butylcyclohexene, isopropylcyclohexene, pentylcyclohexene, etc.

In the present invention, at least one of aliphatic hydrocarbon solvents can be added to the alicyclic hydrocarbon solvent in an amount up to 300% by weight, based on the weight of the alicyclic hydrocarbon solvent. Such aliphatic hydrocarbon solvents preferably have a boiling point of about 75

I. hydrocarbons of methane series: heptane, octane, nonane, decane and like normal paraffins, isooctane and like isoparaffins,

Ii. hydrocarbons of ethylene series: 1-heptene, 1-octene, 1-nonene, etc.

Iii. ligroin, petroleum spirit, refined gasoline and like aliphatic hydrocarbon solvent mixture.

Further, at least one of monohydric aliphatic alcohols having 2 to 20 carbon atoms and dihydric aliphatic alcohols having 2 to 100 carbon atoms can be added to the alicyclic hydrocarbon or the mixture of alicyclic hydrocarbon and aliphatic hydrocarbon for improving the solubility of the modified dye in the solvent. The aliphatic alcohol is used in an amount up to 30% by weight, based on the weight of the solvent. Examples of such aliphatic alcohols are:

1. monohydric aliphatic alcohols such as ethyl alcohol, n-propyl alcohol, isopropyl alcohol, octyl alcohol, lauryl alcohol, cetyl alcohol, etc., and (2) dihydric aliphatic alcohols such as ethyleneglycol, propyleneglycol, 1,3-butyleneglycol 1,4-butyleneglycol, 1,6-hexyleneglycol, 2,5-hexyleneglycol, 3,4-hexyleneglycol, dipropyleneglycol, polypropyleneglycols having up to 100 carbon atoms, etc.

The resinous binder to be used in the invention, which assures satisfactory adhesion of the ink on the drawing or writing surface, includes various natural or synthetic resins heretofore used in marking pen inks. Typical of resinous binders are:

1. Rosin derivatives: pentaerythritol-rosin ester, pentaerythritol-hydrogenated rosin ester, ester gum, hydrogenated rosin, maleinized rosin, etc.

2. Petroleum resins: coumarone-indene resin, polyolefin, etc.

3. Alkyd resins: alkyd resins modified with drying oil or rosin, phenolated alkyd resin, styrenated alkyd resin, etc.

Among these resins, preferable are pentaerythritol-rosin ester, pentaerythritol-hydrogenated rosin ester, ester gum, hydrogenated rosin, maleinized rosin and polyolefin.

The concentration of the modified dye and resinous binder in the present ink composition varies widely with the kind of modified dye and alicyclic hydrocarbon solvent used, etc. Usually, the concentration of modified dye is in the range of 5 to 20%, preferably 5 to 15% by weight and that of resinous binder is in the range of 5 to 35%, preferably 10 to 20% by weight, based on the total weight of the ink composition.

The ink composition of this invention is prepared by adding the modified dye previously prepared as above to an alicyclic hydrocarbon solvent or solvent mixture of alicyclic hydrocarbon and aliphatic hydrocarbon along with the resinous binder and stirring the mixture at a temperature from about 20 dye and the resinous binder in the solvent. Alternatively, the ink composition of this invention is prepared by adding a dye, resinous binder and organic ammonium compound or acid compound to a solvent at the same time or in suitable sequence and stirring the mixture at a temperature from about 20 dissolved in the solvent along with the resinous binder. In the latter case, it is preferable to prepare the ink composition by dissolving the resinous binder, the dye and the organic ammonium compound or acid compound in sequence in order to increase the solubility of the modified dye to the alicyclic hydrocarbon solvent. To the ink composition of the present invention can be added further one or more dyes in order to change the color tone.

To clarify the features of this invention, examples are given below in which parts are all by weight.

EXAMPLE 1

Predetermined amounts of dyes having --CO.sub.2 M and/or --SO.sub.3 M group and quaternary ammonium chlorides (I) shown in Table 9 below were respectively added to 100 parts of isopropyl alcohol, and the mixtures were stirred at 40 resultant precipitates in the mixture were filtered off. After repeatedly washed with water and dried, the precipitates were subjected to extraction with 100 parts of toluene. When the toluene was evaporated off under a reduced pressure, purified modified dyes were obtained as shown in Table 9 below, all of which were insoluble in water and soluble in alicyclic hydrocarbon solvent and the solvent mixture of alicyclic hydrocarbon and aliphatic hydrocarbon and had the same color as the original dyes.

              Table 9______________________________________           Quaternary   Amount ofDye             ammonium chloride                        modifiedNo.   Name*.sup.1           Amount  Comp.  Amount                                dye obtained           used    No.*.sup.2                          used  (part)           (part)         (part)______________________________________1     A.Y. 29   6        4     8     122     D.Blu.22  8       11     5     11.53     D.V. 51   8       14     6     124     D.Br.44   12      17     7     175     A.Blu.43  8       19     6     126     D.R. 39   9       37     7     157     A.R. 92   4       23     7     108     A.R. 52   6       26     7     129     A.R. 42   7       27     8     1310    A.R.186   9       29     6     1311    A.Bla.17  12      12     12    20______________________________________ Note: *.sup.1 "A.Y.", "D.Blu.", "D.V.", "D.Br.", "A.Blu.", "D.R.", "A.R." and "A.Bla." respectively stand for "Acid Yellow", "Direct Blue", "Direct Violet", "Direct Brown", "Acid Blue", "Direct Red", "Acid Red" and "Acid Black". *.sup.2 Compound Nos. 4 to 37 respectively correspond to compound Nos. 4 to 37 attached to the examples of quaternary ammonium halides shown in Table 1 before.

Then predetermined amounts of the modified dyes obtained as above and resinous binder were added to predetermined amounts of solvents to obtain the ink compositions as shown in Table 10 below.

                                  Table 10__________________________________________________________________________Amount of  Resinous binder                Solventmodified  Amount            Amount                                 Color of the inkdye used  used              used compositionNo.  (part)      Kind          (part)   Kind     (part)                                 obtained__________________________________________________________________________1    9     A*.sup.1          16    Dimethylcyclohexane                            75   Yellow                Butylcyclohexane                            602    16    B*.sup.2          17                     Blue                Ethyl alcohol                            73    16    C*.sup.3          17    Isopropylcyclohexane                            67   Reddish purple                Methylethylcyclohexane                            614    20    D*.sup.4          14                     Yellowish brown                Hexyleneglycol                            55    15    C*.sup.3          18    Isopropylcyclohexene                            67   Blue                Butylcyclohexene                            576    17    A*.sup.1          18                     Bluish red                Ethyl alcohol                            8                Ethylcyclohexene                            157    28    A*.sup.1          19                     Bluish red                Petroleum spirit                            40                Dimethylcyclohexene                            168    20    E*.sup.5          16    Ligroin     40   Bluish red                Isopropyl alcohol                            89    18    F*.sup.6          15    Butylcyclohexane                            67   Red10   20    B*.sup.2          18    Ethylbutylcyclohexane                            62   Crimson11   25    C*.sup.3          16    Ethylcyclohexane                            59   Reddish black__________________________________________________________________________ Note: *.sup.1 Pentaerythritol-rosin ester, "Pentaester", trademark, product of Tokushima Seiyu Co., Ltd., Japan. *.sup.2 Hydrogenated rosin, "Spaybelite", trademark, product of Hercules Powder Co., U.S.A. *.sup.3 Polyolefin, "Nisseki Neopolymer 120", trademark, product of Nippo Oil Co., Ltd., Japan. *.sup.4 Polyolefin, "Nisseki Neopolymer 140", trademark, product of Nippo Oil Co., Ltd., Japan. *.sup.5 Pentaerythritol-hydrogenated rosin ester, "Pentaester H", trademark, product of Tokushima Seiyu Co., Ltd., Japan. *.sup.6 Ester gum, "Pensel KK", trademark, product of Arakawa Rinsan Kagaku Kogyo Kabushiki Kaisha, Japan.

Every ink composition obtained as above tinctured a drawing surface satisfactorily in a deep color, was weak in odor, produced hardly any stimulation on the skin, and no color transfer was found on paper which was held in intimate contact with the drawing surface for a long period of over one month.

EXAMPLE 2

To various solvents kept at a temperature of about 70 resinous binders with stirring, and further organic ammonium compounds represented by the formula (I) before were added slowly with stirring to effect complete solution. Subsequently, dyes were added slowly to the resulting solutions, followed by stirring for one and a half hours and then by cooling to room temperature. The filtration of insoluble precipitates gave ink compositions of the present invention as shown in Table 11 below.

                                  Table 11__________________________________________________________________________          Organicammonium       ResinousDye            compound   binder     Solvent          Color of the     Amount     Amount    Amount            Amount                                                 ink     used Comp.*.sup.2                used      used              used compositionNo. Name*.sup.1     (part)          No.   (part)                     Kind*.sup.3                          (part)                                Kind        (part)                                                 obtained__________________________________________________________________________                                Ethylcyclohexane                                            2012  A.Br. 10   8     13   E    18                     Brown    20                               Refined gasoline                                            39                                Ethylbutylcyclohexane                                            6013  A.V.22     8    13    6    B    15                     Reddish purple                                Ethyl alcohol                                            11                                Pentylcyclohexene                                            6214  D.G. 1     12   15    7    A    15                     Green                                Dipropyleneglycol                                            4                                Ethylcyclohexane                                            6215  A.R.111     8    41    8    F    17                     Red                                Propyleneglycol                                            5                                Dimethylcyclohexane                                            6016  A.O.41     9    31    10   B    16                     Yellowish orange                                Tripropyleneglycol                                            5__________________________________________________________________________ Note: *.sup.1 "A.Br.", "A.V.", "D.G.", "A.R." and "A.O." respectively stand for "Acid Brown", "Acid Violet", "Direct Green", "Acid Red" and "Acid Orange" *.sup.2 Compound Nos. 8 to 41 respectively correspond to compound Nos. 8 to 41 attached to the examples of quaternary ammonium halides shown in Table 1 before. *.sup.3 A, B, E and F are the same as in Table 10 of Example 1.

Every ink composition obtained as above had distinguished properties the same as the compositions obtained in Example 1.

EXAMPLE 3

Predetermined amounts of dyes and pyridinium chlorides as shown in Table 12 below were respectively added to 100 parts of organic solvents, and the mixtures were stirred at about 50 resultant precipitates in the mixture were filtered off. After repeatedly washed with water and dried, the precipitates were subjected to extraction with 100 parts of toluene. Purified modified dyes were obtained when the toluene was evaporated off under a reduced pressure. The modified dyes thus obtained were insoluble in water and soluble in a high concentration in alicyclic hydrocarbon solvent and solvent mixture of alicyclic hydrocarbon and aliphatic hydrocarbon and had the same colors as the original dyes.

                                  Table 12__________________________________________________________________________Dye            Pyridinium chloride      Amount of     Amount       Amount           modified dye     used         used             obtainedNo. Name*.sup. 1     (part)          Comp. No. *.sup.2                  (part)                       Organic solvent                                   (part)__________________________________________________________________________17  A.R. 138     10   46      5    Methyl cellosolve                                   13.518  D.V. 9     6    47      6    Ethyl cellosolve                                   1119  D.O. 10     7    51      8    Isopropyl alcohol                                   1320  D.Br. 95     9    55      12   methyl ethyl ketone                                   1821  A.R. 87     6    67      5    Methyl isobutyl ketone                                   9.522  D.Bla.19     10   57      10   Ethyl alcohol                                   1823  A.Blu.     8    60      7    Isopropyl alcohol                                   1324  A.Blu.93     8    66      10   Methyl cellosolve                                   1725  A.Blu.83     7    64      5    Ethyl cellosolve                                   10__________________________________________________________________________ Note: *.sup.1 "A.R.", "D.V.", "D.O.", "D.Br.", "D.Bla." and "D.Blu." respectively stand for "Acid Red", "Direct Violet", "Direct Orange", "Direct Brown", "Direct Black" and "Direct Blue". *.sup.2 Compound Nos. 46 to 66 respectively correspond to compounds Nos. 46 to 66 attached to the examples of pyridinium halides shown in Table 2 before.

Ink compositions of the present invention were prepared by dissolving the modified dyes obtained as above and resinous binders in solvents as shown in Table 13.

                                  Table 13__________________________________________________________________________    Resinous binder                   Solvent   Amount of   modified   Amount             Amount                                 Color of the   dye used   used               used ink compositionNo.   (part)    Kind*.sup.1         (part)    Kind     (part)                                 obtained__________________________________________________________________________              Isopropylcyclohexane                            4017 15    A    17   Aliphatic hydrocarbon*.sup.2                            25   Red              Tripropyleneglycol                            3              Butylcyclohexane                            6018 18    E    18                      Reddish purple              Ethyl alcohol 4              Ethylcyclohexane                            6019 18    B    19                      Yellowish orange              Dipropyleneglycol                            320 25    C    19   Butylcyclohexane                            56   yellowish brown21 17    D    17   Ethylcyclohexane                            66   Red              Dimethylcyclohexane                            5222 25    A    18                      Greenish black              Hexyleneglycol                            5              Isopropylcyclohexane                            3923 18    E    16   Aliphatic hydrocarbon*.sup.2                            20   Green              Isopropyl alcohol                            7              Butylcyclohexene                            4724 19    E    17                      Green              n-Octane      17              Isopropylcyclohexane                            4125 15    B    19   n-Octene      20   Reddish green              Dipropyleneglycol                            5__________________________________________________________________________ Note: *.sup.1 A, B, C, D and E are the same as in Table 10 in Example 1. *.sup.2 "Isoper E", trademark, product of Esso Petrochemical Co., Ltd., Japan.

EXAMPLE 4

Resinous binders were added to solvents at about 50 and further organic ammonium compounds represented by the formulas (II), (III) and (IV) before and dyes were added slowly with stirring to effect complete solution. The resulting solutions were further stirred for about 2 hours and then allowed to cool to room temperature. Ink compositions of the present invention were obtained by filtering out the insoluble precipitates, as shown in Table 14 below.

                                  Table 14__________________________________________________________________________             Organic             ammonium   ResinousDye               compound   binder   Solvent   Amount          Amount   Amount          Amount                                                 Color of the   used      Comp.*.sup.2                   used     used            used ink compositionNo.   Name*.sup.1   (part)        Formula             No.   (part)                        Kind*.sup.3                            (part)                                 Kind       (part)                                                 obtained__________________________________________________________________________26 D.Br.   10   II   53    12   E   17   Dimethylcyclohexane                                            61   Reddish brown   1A                                 Butylcyclohexane                                            5227 A.Y.17   10   II   70    14   D   17                   Greenish yellow                                 Ethyl alcohol                                            7                                 Pentylcyclohexene                                            5728 A.Blu.   9    II   63    8    A   19                   Green   41                                 Isopropyl alcohol                                            7                                 Ethylcyclohexane                                            4529 A.V.43   9    III  72    7    C   17                   Violet                                 Propylcyclohexene                                            22                                 Refined gasoline                                            4530 A.R.26   9    IV   74    6    A   15                   Red                                 Ethylcyclohexane                                            25__________________________________________________________________________ Note: .sup.*1 "D.Br.", "A.Y.", "A.Blu.", "A.V." and "A.R." respectively stand for "Direct Brown", "Acid Yellow", "Acid Blue", "Acid Violet" and "Acid Red". .sup.*2 Compound Nos. 53 to 74 respectively correspond to those attached to the examples of organic ammonium compounds shown in Tables 2, 3, and 4 before. *.sup.3 A, C, D and E are the same as in Table 10 of Example 1.

EXAMPLE 5

Modified dyes were obtained from dyes and acid salts of amines [formula (V)] as shown in Table 15 by the similar procedure as in Example 3. All of the modified dyes obtained had the same colors as the original dyes and were soluble in high concentration in alicyclic hydrocarbon solvent and solvent mixture of alicyclic hydrocarbon and aliphatic hydrocarbon, but were hardly soluble in water.

                                  Table 15__________________________________________________________________________Dye            Amine salt     Amount     Amount           Amount of modified     used Comp..sup.*2                used             dye obtainedNo.   Name*.sup.1     (part)          No.   (part)                     Organic solvent                                 (part)__________________________________________________________________________31 A.Blu.40     6    89    7    Ethyl alcohol                                 1232 A.V. 43     7    104   6    Ethyl alcohol                                 11.533 A.Blu.15     6    111   3    Isopropyl alcohol                                 834 A.Blu.74     6    85    8    Ethyl alcohol                                 1235 D.Y. 28     8    86    8    Ethyl cellosolve                                 1436 A.R. 14     6    89    8    Isopropyl alcohol                                 1237 A.R. 138     13   75    5    Ethyl alcohol                                 16.538 A.Y. 36     7    77    4    Ethyl alcohol                                 1039 A.Blu.117     6    81    4    Ethyl cellosolve                                 940 A.Br. 4     9    82    10   Ethyl cellosolve                                 1541 A.R. 154     8    94    7    Methyl cellosolve                                 1342 A.V. 49     9    100   5    methyl ethyl ketone                                 1343 A.R. 51     7    93    4    Methyl isobutyl ketone                                 10__________________________________________________________________________ Note: *.sup.1 "A.Blu.", "A.V.", "D.Y.", "A.R", "A.Y." and "A.Br." respectively stand for "Acid Blue", "Acid Violet", "Direct Yellow", "Acid Red", and "Acid Brown". *.sup.2 Compound Nos. 75 to 111 respectively correspond to those attached to the examples of amines salts shown in Table 5 before.

Ink compositions of the present invention were prepared by dissolving the modified dyes thus obtained and resinous binders in solvents as shown in Table 16 below.

                                  Table 16__________________________________________________________________________Amount of    Resinous binder               Solvent   modified   Amount              Amount                                  Color of the ink   dye used   used                used compositionNo.   (part)    Kind*.sup.1         (part)               Kind          (part)                                  obtained__________________________________________________________________________               Ethylcyclohexane                             5031 17    F    17                       Blue               Aliphatic hydrocarbon*.sup.2                             6               Ethylcyclohexene                             1732 18    F    14                       Blue               Ligroin       50               Butylcyclohexene                             4033 15    G    14    n-Heptane     25   Blue               Ethyl alcohol 634 20    A    18    Isopropylcyclohexane                             62   Blue               Dimethylcyclohexane                             4035 18    E    19                       Yellow               Refined gasoline                             23               Ethylcyclohexane                             5036 20    F    14    Aliphatic hydrocarbon*.sup.2                             12   Magenta               Dipropyleneglycol                             437 17    C    18    Dimethylcyclohexane                             65   Red               Ethylcyclohexane                             6538 16    B    18                       Reddish yellow               Isopropyl alcohol                             6               Ethylbutylcyclohexane                             6339 17    E    16                       Purplish blue               Propyleneglycol                             440 25    D    14    Butylcyclohexane                             61   Reddish brown               Isopropylcyclohexane                             6041 18    C    16                       Magenate               Ethyl alcohol 6               Dimethylcyclohexane                             6342 15    A    18                       Violet               Hexyleneglycol                             4               Isopropylcyclohexane                             5043 14    E    16    n-Heptane     15   Orange red               Ethyl alcohol 5__________________________________________________________________________ Note: *.sup.1 A, B, C, D, E and F are the same as in Table 10 of Example 1. G i an alkyd resin modified with soybean oil. *.sup.2 "Isoper E" the same as in Table 13 of Example 3.

EXAMPLE 6

Resinous binders were added to solvents at about 60 and further organic amine salts represented by the formula (V) before were added with stirring to effect complete solution. Subsequently, dyes were added to the resulting solutions, followed by stirring for an hour and then by cooling to room temperature. Ink compositions of the present invention were obtained by filtering out the insoluble precipitates from the solution as given in Table 17 below.

                                  Table 17__________________________________________________________________________Dye            Amine salt  Resinous binder                                 Solvent          Color of the     Amount      Amount    Amount           Amount                                                  ink     used Comp.*.sup.*2                 used      used             used  compositionNo.   Name*.sup.1     (part)          No.    (part)                      Kind*.sup.3                           (part)                                 Kind       (part)                                                  obtained__________________________________________________________________________                                 Dimethylcyclohexane                                            6544 A.Blu.120     7    108    4    B    16                     Greenish blue                                 Isopropyl alcohol                                            8                                 Butylcyclohexene                                            6045 A.R. 6 9    88     6    B    18                     Purplish red                                 Isopropyl alcohol                                            7                                 Isopropylcyclohexane                                            4046 A.R. 26     9    90     9    A    18    n-Heptane  19    Red                                 Ethyl alcohol                                            547 A.V. 15     8    83     7    A    19    Butylcyclohexane                                            66    Violet__________________________________________________________________________ Note: *.sup.1 "A.Blu.", "A.R." and "A.V." respectively stand for "Acid Blue", " Acid Red" and "Acid Violet". *.sup.2 Composition Nos. 83 to 108 respectively correspond to those attached to the examples of amine salts shown in Table 5 before. *.sup.3 A and B are the same as in Table 10 of Example 1.

EXAMPLE 7

Predetermined amounts of basic dyes and alikali salts of acid compound represented by the formulas (VI), (VII), (VIII), (IX) and (X) as shown in Table 18 below were respectively added to 100 parts of water and the mixtures were stirred at about 40 resulting precipitates in the mixtures were filtered off. After repeatedly washed with water and dired, the precipitates thus filtered off were subjected to extraction with 100 parts of toluene. Purified modified dyes as shown in Table 18 were obtained by evaporating off the toluene under a reduced pressure. The modified dyes thus obtained were hardly soluble in water but soluble in a high concentration in an alicyclic hydrocarbon and a mixture of alicyclic hydrocarbon and aliphatic hydrocarbon, and had the same colors as the original dyes.

                                  Table 18__________________________________________________________________________Dye           Alkali salt of acid compound    Amount            Amount                           Amount of modified    used              used dye obtainedNo.   Name*.sup.1    (part)         Formula              Comp. No..sup.*2                      (part)                           (part)__________________________________________________________________________48 B.Y. 10    10    VI  115     6    1549 B.R. 12    10    VI  125     9    1850 B.Blu.7    11    VI  133     7    1851 B.R. 1    9     VI  136     7    1552 B.Blu.5    12    VI  138     10   2053 B.V. 3    8     VI  139     6    1254 B.R.13    10    VI  143     8    16.555 B.Y. 2    10    VII 148     12   20.556 B.O. 2    5     VII 153     10   1457 B.V. 1    7     VIII              155     14   2058 B.G. 4    10    IX  157     7    1559 B.Blu.25    12    X   161     5    15.560 B.Blu.3    8     X   163     10   16.5__________________________________________________________________________ Note: *.sup.1 "B.Y.", "B.R.","B.Blu.", "B.V.", "B.O." and "B.G." respectively stand for " Basic Yellow", Basic red", "Basic Blue", "Basic Violet", "Basic Orange" and "Basic Green". *.sup.2 Compound Nos. 115 to 163 respectively correspond to those attache to the examples of compounds represented by the formulas (VI) to (X) before.

Ink compositions of the present invention were prepared by dissolving the modified dyes thus obtained and resinous binders in solvents as shown in Table 19 below.

                                  Table 19__________________________________________________________________________Amount of    Resinous binder Solvent   modified   Amount                   Amount                                       Color of the   dye used   used                     used ink compositionNo.   (part)    Kind*.sup.1         (part)     Kind          (part)                                       obtained__________________________________________________________________________48 18    C    18         Ethylcyclohexane                                  64   Reddish yellow49 20    A    15         Methylethylcyclohexane                                  65   Purplish red                    Dimethylcyclohexane                                  4050 18    E    17         n-Heptane     18   Blue                    Isopropyl alcohol                                  7                    Ethylbutylcyclohexane                                  6551 17    F    14                            Scarlet                    Dipropyleneglycol                                  4                    Ethylcyclohexane                                  6052 19    F    17                            Greenish blue                    Propyleneglycol                                  4                    Butylcyclohexene                                  6153 18    B    16                            Purple                    Ethyl alcohol 554 18    A    17         Isopropylcyclohexane                                  65   Pinky yellow55 21    D    16         Butylcyclohexene                                  63   Yellow                    Ethylcyclohexene                                  4756 24    C    17                            Yellowish Brown                    Aliphatic hydrocarbon*.sup.2                                  12                    Dimethylcyclohexane                                  6157 25    B    19                            Purple                    Isopropyl alcohol                                  758 18    F    14         Methylethylcyclohexane                                  65   Bluish green59 16    H    12         Dimethylcyclohexane                                  72   Green                    Ethylcyclohexane                                  4860 16    E    19                            Greenish blue                    Aliphatic hydrocarbon*.sup.2                                  17__________________________________________________________________________ Note: *.sup.1 "A", "B", "C", "D", "D" and "F" are the same as in Table 10 of Example 1. "H" is an alkyd resin modified with rosin. *.sup.2 "Isoper E", the same as in Table 13 of Example 3.

EXAMPLE 8

Resinous binders were added to solvents at 70 further alkali salts of acid compounds represented by the formulas (VI) and (X) before were added with stirring to effect complete solution. Subsequently, basic dyes were added to the resulting solution, followed by stirring for two hours and then by cooling to room temperature. Ink compositions of the present invention were obtained by filtering out the insoluble precipitates from the solution as shown in Table 20 below.

                                  Table 20__________________________________________________________________________        Alkali salt ofDye          acid compound   Resinous binder                                   Solvent                                                   Color of    Amount          Amount   Amount           Amount                                                   the ink    used            used     used             used compositionNo.   Name*.sup.1    (part)        Formula             Comp. No.*.sup.2                    (part)                        Kind*.sup.3                             (part)                                   Kind       (part)                                                   obtained__________________________________________________________________________                                   Isopropylcyclo-61 B.Y.11    10  VI   115    8   A    18    hexane     57   Yellow                                   Ethyl alcohol                                              7                                   Butylcyclohexane                                              4062 B.Blu.26    10  VI   128    6   E    19    Aliphatic hydro-*.sup.4                                              20   Blue                                   carbon                                   Hexyleneglycol                                              5                                   Butylcyclohexane                                              4563 B.V.10    10  X    167    8   A    18    n-Heptane  15   Deep violet                                   Dipropyleneglycol                                              4__________________________________________________________________________  Note: *.sup.1 "B.Y.", "B.Blu." and "B.V." respectively stand for "Basic Yellow" "Basic Blue" and "Basic Violet". *.sup.2 Composition Nos. 115, 128 and 167 respectively correspond to thos attached to the examples of compound represented by the formula (VI) and (X) before. *.sup.3 "A" and "E" are the same as in Table 10 of Example 1. *.sup.4 "Isoper E", the same as in Table 13 of Example 3.